S.H. 48A
Carrying S.H. 48A over UNNAMED CREEK
2.2 MI W OF JCT S.H. 48, Johnston, Oklahoma
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: S.H. 48A
The S.H. 48A bridge in Johnston, Oklahoma carries S.H. 48A over UNNAMED CREEK. It was built in 2014, making it 12 years old today. The structure is built primarily of concrete and spans 1 section, stretching 46.3 meters (152 feet) end to end. Daily traffic averages 810 vehicles, placing it in the lower-traffic tier of Oklahoma bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 37.1 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How S.H. 48A compares
Live comparison across Oklahoma.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 2014
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 46.3 m (152 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 810 vehicles/day
- Structure Number
- 304140000000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether S.H. 48A is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare S.H. 48A against other structures in Johnston and across Oklahoma. Oklahoma bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for S.H. 48A?
S.H. 48A in Johnston, Oklahoma on the FHWA's 0–9 scale.
How often is S.H. 48A inspected?
S.H. 48A's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 810 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. S.H. 48A is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for S.H. 48A?
S.H. 48A has an NBI inventory load rating of 37.1 metric tons.
Who is responsible for maintaining S.H. 48A?
S.H. 48A is owned and maintained by State Highway Agency.
How old is S.H. 48A and does age affect safety?
S.H. 48A was built in 2014, making it 12 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.